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CNPJ MCP Server

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answering

CNPJ is answering right now. Last checked 10 min ago. It exposes 8 tools.

Free Brazilian CNPJ lookup (legal name, status, partners) + lawsuit discovery. Public data, no login

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 91 days of history · worst day 91%
91 days agonow
98.9%
Uptime 24h
90 of 91 checks
8
Tools
read from the server
1148 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 165

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 8 August 2026. No other catalogue keeps this.

2 Nov a tool changed version7 times that day
30 Oct a tool changed version
27 Oct a tool changed version2 times that day
26 Oct a tool changed version6 times that day
24 Oct a tool changed version
23 Oct a tool changed version8 times that day
22 Oct a tool changed version2 times that day
21 Oct a tool changed version
20 Oct a tool changed version2 times that day
11 Oct a tool changed version3 times that day
and 155 more, back to 8 August 2026

CNPJ does not always answer

Over the last week it answered 98.8% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 10 min ago.

run in your terminal
claude mcp add cnpj-mcp --transport http https://api.mcp.ai/p_cnpj
Settings → Connectors → Add custom connector, then paste this address
https://api.mcp.ai/p_cnpj
~/.codex/config.toml
[mcp_servers.cnpj-mcp]
url = "https://api.mcp.ai/p_cnpj"
.cursor/mcp.json
{
  "mcpServers": {
    "cnpj-mcp": {
      "url": "https://api.mcp.ai/p_cnpj"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "cnpj-mcp": {
      "type": "http",
      "url": "https://api.mcp.ai/p_cnpj"
    }
  }
}

Available tools 8

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

cnpj
cnpj_consultar
Consulta cadastral de um CNPJ (grátis): razão social, nome fantasia, situação cadastral, CNAE principal, porte, município/UF e SÓCIOS (QSA). Útil pra identificar a empresa e seus sócios antes de buscar processos.
cnpj_processos
DESCOBERTA por CNPJ: resolve o CNPJ em razão social (e sócios) e busca os processos por NOME no Diário (DJEN) — grátis, com número de processo completo. Opcionalmente inclui os processos dos sócios. Com os números, enriqueça com as tools datajud.
authenticate
authenticate
MCP.AI for IDE agents (Cursor, etc.): log in in the browser, copy the access token. Best: add it to this server's config as a header `Authorization: Bearer <token>` for a permanent, non-expiring connection. Or paste it here for a session-only login: call with { token: "<jwt>" } after the user pastes, or with no args to get the link.
connect
connect
Returns connection status and URLs. When all providers are connected, returns authenticated:true and empty pending[]. When credentials are missing, returns connect_url for the toolkit and per-install URLs.
marketplace
marketplace
The official mcp.ai marketplace — the in-platform catalog of every MCP/tool, AND the way to run them. Covers capability requests like "find an MCP that does X", "consulta um CPF", "is there a tool for Y". Core flow: action=search discovers MCPs by intent → describe returns one MCP's full profile (every tool with its id + params, pricing, auth) so you pick the right tool_id → invoke RUNS that tool. KEY: invoke works even when the MCP is NOT installed — it runs the tool pontualmente (one-off), without adding the MCP to the toolkit and without bloating the tool list. If the MCP needs a credential/login, invoke returns a connect link; if it is paid and the wallet is empty, invoke returns a checkout/top-up link (the user opens it, then you retry). Use install only to make an MCP PERMANENT in the active toolkit (its tools then show up natively in future sessions); prefer invoke for a single/occasional use. list_tools lists what is callable right now. subscribe/cancel handle per-MCP billing; report_bug sends feedback; request_mcp asks us to build a NEW MCP when nothing fits. Search/describe flag installed_in_toolkit vs installed_in_workspace. Writes (install/uninstall/subscribe/cancel and the one-off install behind invoke) require workspace owner/admin. It also carries the mcp.ai PROMPT LIBRARY, which is about ready-made prompt TEXT rather than MCPs: search_prompts finds one, get_prompt returns its full text with {{variables}} filled, and publish_prompt saves a prompt and returns a shareable mcp.ai/p/<slug> link that opens without login.
report
report_bug
Report a bug, missing feature, or send feedback. Include the conversation array with recent messages for reproduction.
show
show_version
Show the current MCP platform and adapter versions.
toolkit
toolkit_info
Returns the current toolkit state: installed MCPs, their connection status, the accounts connected to each one, and how many catalog tools each exposes.

Endpoints

URLTransportStateLatencyChecked
https://api.mcp.ai/p_cnpj streamable-http answering 290 ms 10 min ago

Alternatives to CNPJ

same job, measured the same way
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Overfit — German tenders & procurement law
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Brazil Company Data — Bulk CNPJ Lookup & Enrichment
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Bulk CNPJ lookup and enrichment with official Brazilian company registry data.

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CNPJ — questions

Answers built from our own checks of this server.

What can CNPJ do?
It exposes 8 tools, read directly from the server on our last check. Among them: authenticate, cnpj_consultar, cnpj_processos, connect, marketplace, report_bug and 2 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is CNPJ working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 90 of 91 checks got a reply (98.9%), average response time 1148 ms. The bar chart above shows every period we have measured.
Is CNPJ still maintained?
The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.
How do I connect CNPJ?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does CNPJ need an API key?
No. CNPJ completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 8 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is CNPJ?
It answers our handshake in 1148 ms on average, which is faster than 4% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.